Critical behavior of quantum magnets with long-range interactions in the thermodynamic limit

Fey S, Schmidt KP (2016)


Publication Language: English

Publication Status: Published

Publication Type: Journal article

Publication year: 2016

Journal

Publisher: AMER PHYSICAL SOC

Book Volume: 94

Journal Issue: 7

DOI: 10.1103/PhysRevB.94.075156

Abstract

Quasiparticle properties of quantum magnets with long-range interactions are investigated by high-order linked-cluster expansions in the thermodynamic limit. It is established that perturbative continuous unitary transformations on white graphs are a promising and flexible approach to treat long-range interactions in quantum many-body systems. We exemplify this scheme for the one-dimensional transverse-field Ising chain with long-range interactions. For this model, the elementary quasiparticle gap is determined allowing to access the quantum-critical regime including critical exponents and multiplicative logarithmic corrections for the ferroand antiferromagnetic case.

Authors with CRIS profile

How to cite

APA:

Fey, S., & Schmidt, K.P. (2016). Critical behavior of quantum magnets with long-range interactions in the thermodynamic limit. Physical Review B, 94(7). https://dx.doi.org/10.1103/PhysRevB.94.075156

MLA:

Fey, Sebastian, and Kai Phillip Schmidt. "Critical behavior of quantum magnets with long-range interactions in the thermodynamic limit." Physical Review B 94.7 (2016).

BibTeX: Download